/Engine/Source/Runtime/Engine/Classes/Engine/Blueprint.h
Notify the blueprint when a graph is renamed to allow for additional fixups.
virtual void NotifyGraphRenamed ( class [UEdGraph](API\Runtime\Engine\EdGraph\UEdGraph) * Graph, [FName](API\Runtime\Core\UObject\FName) OldName, [FName](API\Runtime\Core\UObject\FName) NewName )